Conversion formula

The conversion factor from millimeters to centimeters is 0.1, which means that 1 millimeter is equal to 0.1 centimeters:

1 mm = 0.1 cm

To convert 218 millimeters into centimeters we have to multiply 218 by the conversion factor in order to get the length amount from millimeters to centimeters. We can also form a simple proportion to calculate the result:

1 mm → 0.1 cm

218 mm → L_(cm)

Solve the above proportion to obtain the length L in centimeters:

L_(cm) = 218 mm × 0.1 cm

L_(cm) = 21.8 cm

The final result is:

218 mm → 21.8 cm

We conclude that 218 millimeters is equivalent to 21.8 centimeters:

218 millimeters = 21.8 centimeters

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 centimeter is equal to 0.045871559633028 × 218 millimeters.

Another way is saying that 218 millimeters is equal to 1 ÷ 0.045871559633028 centimeters.

Approximate result

For practical purposes we can round our final result to an approximate numerical value. We can say that two hundred eighteen millimeters is approximately twenty-one point eight centimeters:

218 mm ≅ 21.8 cm

An alternative is also that one centimeter is approximately zero point zero four six times two hundred eighteen millimeters.

Conversion table

millimeters to centimeters chart

For quick reference purposes, below is the conversion table you can use to convert from millimeters to centimeters